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Licensed Insulation Contractors in San Jose, California

Updated November 1, 2026 from CSLB's public license file · C-2 Insulation and Acoustical Contractor

  • 23licensed insulation contractors
  • 21active (Clear)
  • 8.7%with a suspension
  • 30.4%workers' comp exempt
  • 9.1 yrsmedian time licensed
  • 78.3%corp / LLC / partnership (21.7% sole owner)
  • 2new in the last 12 months
  • —change tracking began November 1, 2026

San Jose is home to 23 insulation contractors in CSLB's license file, the most in Santa Clara County. 91.3% are Clear.

The share with a suspension, 8.7%, is 3.3 points higher than the Santa Clara County rate for the same license (5.4%). 30.4% report a workers' comp exemption, 8 points higher than the statewide figure for insulation contractors (22.4%), so many of these businesses say they have no employees.

2 of these licenses are less than a year old, while 43.5% have been held for 10 years or more. The median is 9.1 years.

In California this work generally calls for the C-2 Insulation and Acoustical Contractor license (or a B license when it is part of a larger multi-trade job). See the C-2 Insulation and Acoustical Contractor guide for what the license covers.

How to check an insulation contractor's license in San Jose

  1. Look the company up by name or license number (search San Jose). On the profile, confirm three things: Clear status, the C-2 license for this kind of work, and a contractor's bond on file.
  2. Confirm it live with CSLB's Instant License Check. Statuses change between our weekly refreshes, especially workers' comp and bond suspensions.
  3. Ask for the pocket license and a photo ID and match the name to your contract. Work of $1,000 or more needs a license (the $1,000 rule), and a down payment can't exceed $1,000 or 10% (down payment rules).

All 23 insulation contractors in San Jose

San Jose insulation contractors sorted with Clear licenses first, then by years licensed. Badges reflect CSLB's file dated November 1, 2026, not a rating of anyone's work.

Licensed insulation contractors in San Jose
Business nameLicense #StatusYearsWorkers' compBond
California Drywall CO 148320 Clear 72 Insured On file
Barrall George 343557 Clear 49 Exempt On file
Castellanos Richard 356648 Clear 48 Exempt On file
Stark Eric Interiors INC 591877 Clear 36 Insured On file
Scates Construction INC 703114 Clear 31 Insured On file
Bay Weatherization & Insulation 777747 Clear 26 None On file
Bay Area Fireplace Const & Insulation 814698 Clear 24 Exempt On file
Sbay Construction INC 928101 Clear 17 Insured On file
S B I Interiors INC 983778 Clear 13 Insured On file
Central California Insulation 1018810 Clear 10 Insured On file
Attic Crew 1023879 Clear 9 Insured On file
Luxury Home Remodeling INC 1044943 Clear 8 Exempt On file
Bay Area Insulation Services INC 1053575 Clear 7 Insured On file
Alpha HVAC & Electrical 1060833 Clear 6 Insured On file
Ideal Attic Insulation INC 1095944 Clear 4 Insured On file
Golden State Home Services INC 1098768 Clear 4 Exempt On file
Attic Bros 1115608 Clear 2 Insured On file
Mgt Insulation INC 1128483 Clear 2 Insured On file
Attic Team INC 1139000 Clear 1 Exempt On file
Superior Insulation 1146932 Clear <1 Exempt On file
Thermal Insulation 1162053 Clear <1 Insured On file
HVAC Guru 1031326 Susp: bond payment 9 Insured On file
Sandium LLC 1140043 Susp: no qualifying individual 1 Insured On file

Source: CSLB public data · Updated November 1, 2026 Status can change at any time. Verify on CSLB's Instant License Check.

Frequently asked questions

How many licensed insulation contractors are in San Jose?

CSLB's current public file lists 23 insulation contractors with a San Jose mailing address. 21 have a Clear status, and 82.6% show no issues at all in the file (no suspension, no pending action, bond on file, not near expiration).

What license does an insulation contractor need in California?

CSLB issues the C-2 Insulation and Acoustical Contractor classification for this work. In Santa Clara County, 91.3% of San Jose's holders are Clear right now. The license requirement starts at $1,000 per job (the minor-work rule).

How do I check an insulation contractor's workers' comp?

Open the contractor's profile here to see the workers' comp type and insurer from CSLB's file. In San Jose, 65.2% of insulation contractors list a policy, 30.4% claim an exemption and 4.3% show no current coverage. Confirm the policy with CSLB's workers' comp search before work starts. How to check workers' comp.

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